Steam-locomotive.



. L. ZERBE.

STEAM LOCOMOTIVL APPLICATION FILED 512.28, uns.

ratelim May23,1916.

FED/ 7 BOILER 7'0 STE/4 CHESTZS lure REseam/R COMPRESSED R W BOILER T STEAM c/vssrs m receiver oicsi:

CHARLES LESLIE ZEBTBE, OE ST. ALBANS, VERMONT.

STEAM-LOGOMOTIVE.

i zgg Specification of Letters Patent Patented May $3, 1916.-

I Application filed February '28, 1916. Serial No. 80,871.

T all whom it may concern:

Be it known that 1, CHARLES L. ZERBE, a

citizen of the United States of America, and

a resident of St. Alhans, county of Franklin, and State of Vermont, have invented certain new and useful Improvements in Steam-Locomotives, of which the following is a full and clear specification.

In locomotive-s using superheated steam, it is usual for the engincman to manually con trol the throttle in suchmanncr that a small be perm tted to enclosed and while the locomotive is traveling the supplemental adinission va-lve will be automatically held open, so that a small quantity of steam steam chests, irrespective and wholly independent of the main admission valve.

In the drawings-Figure 1 is a sectional view showing the position of the parts when the locomotive is at rest; and Fig. 2 is a similar viewshowing the position of the parts while the locomotive is moving.

Referring to the drawings annexed by reference characters, a designates a live steam pipe which will connect the steam space of the boiler to the steam spaces of the steam chests by suitable piping. lnscrted in thisipipe at a suitable po it is a steam valve Z) which is supplemental to the usual main admission valve, not shown in my drawings. It is the object of the mechanism connected to this supplemental admission valve to cause this valve to remain open during the movement of the locomotive. A preferred mechanism for accomplishing this is as :l'ollows c designates the usual compressed airervoir carried on the locomotive, (Z a pipe leading therefrom to a small valve chest e. A valve device is inserted in the pipe all,

this valve device in this instance hcing providcd with a ball valve 7 which, h y the jarring or swaying of the locmnotivc will roll about in the valve chanihcr sutiiciently to permit air to pass through the pipe 5 to a port r formed in one wall.

will be supplied to the.

continuous stream of live steam will almost continuously. As the air in the reservoir c is carried at too high a pressure to properly operate the mechanism, 1 will use a suitable pressure-reducing device it, or my device may be connected to the air-signal line arid thus avoid the neccssit T of a re ducing device.

In the chest 6 is arranged a slide valve provided with a port j and having attached to it a piston is which. works 1r cvlindcr Z connected to one end of the valve lchcst c. The outer cnd of the cylinder Z is cl sod by a head m to which is connected. chamber in in the-chamber n is a rod whose inner end extends into the cylinder Z and lies in the path or" the piston is, this rod 0 being normally forced. i-nwardl spring p. lhe

chamber n is alvsa qs in comnmnica ion with c i 'linder 'Z lay means of the rod hole 0'.

l T 'v lhc chamber 12 is connected by z passage valve chest acent the working in of he va' c. Ad acent to the port 9 is a per s which is.

adapted to exhaust into the atmosph and in the working face of the valve 5 is orovided a longitudinal port :5. Connected to the passage 1] is pipe it whose otherhas communication with the on. cylinder o connected to the admission valve F. In this cyl llGl c works a piston to which is connect. to the stem of avalve disk J} of said supplemental admission valve, a coil spring 2 being; provided to normally hold valve eloscdl Connected to the pipe u at a: table. 1 pressure iinlicator to enable the cii at glance 0 determine whether or ct apparatus is in work order. is controlled by a pin valve 7'" c. stem 22- of piston. 7c, and to enable tlc ment of stem 70 to open and close the stem has a lost motion JOlllltA/UGl l to valve 5.

It is sometimes desirable toliold valve .r open whether or not the auttmn'ti dcviccs arc in operation.

T we lc'tcr o designates a set screw threaded through the outer head oi? cvl-indcr o and adapted when screwed in to make contact with the piston to and hold the valve :1: open. When the valve. is thus held open. a

he dclivercd to the steam chests, This st! am mav he controlled. by a suitable hand valve 01 iii. the pipe at at some point hcti.

n the valve c;

this valve be placed in a position where the engineman can conveniently manipulate it. By thus propping the valve 00 open and by manipulating the globe valve (1, the engineman may supply sufiicient steam to the chest to drive the locomotive to the round-house or other terminal without manipulating the usual throttle, when the throttle or the means for operating the same become inoperative.

It Will beobserved that the jarring or swaying of the locomotive will roll the ball 9 su-fliciently to admit air into the chest 6 in practically a continuous stream. As the pressurebuilds up in the chest e,'the piston is will move to the left and thus open pin valve j and be forced against the springactuated rod 0. When this pressure has forced the piston is far enough over for port j to register with port r, air will pass from port 1' through passage 9 and pipe a. to cylinder c. When the pressure behind piston 'w is sufficient to open valve a: against pressure of live steam, said valve x will open and a small quantity of steam will be admitted to the steam chests of the locomotive. Air will also pass from passage 9 into chamber a and thence through hole 0' into cylinder Z, and when the pressure on both sides of the piston Z; is equalized, coil spring pwill tend to force the piston is toward the right. Thus forcing the piston 70 toward the right will tend to close pin valve 1" and thus choke the passage of air through ports 9' and 1" and thus cause the pressure to build up in chest a sufficiently to balance the action of the coil spring 39. In this way, a constantly balanced condition of the slide valve 2' is obtained. Should any steam leak through the head of cylinder '0 past the stem, it will escape in the form-of steam or water through drain port a. I When the 10- comotive is at rest and ball 9 closes its port, the pressure in the valve chest-e will be gradually reduced'to atmosphere through a bleed port I) and thus allow the pressure on the outer face of'piston 70 to force it inwardly a sufiicient distance to bring port r into communication with exhaust port a through the valve exhaust port t and thereby entirely eliminating the necessity on 'the part of the engineman of manually performing this operation every time the locomotive coasts or drifts. I have,,shown a valve device operable by the swaying or jarring of the locomotive, but it will be understood that it is within the scope of my invention to employ any kind or type of* valve that will open while the locomotive is in motion.

Having thus described my invention, what I claimis: Y

1. In an apparatus of the class set forth, a supplemental steam valve for admitting steam to the steam chests of the locomotive independently of the main admission valve,

and means whereby said valve is automatically maintained iii an open position during the movement of the locomotive,

said means embodying a pneumatic appa-. ratus comprising a balanced slide valve. an

admission va'lve therefor operable by the movement of the locomotive, and a fluid pressure means connected to the supplemental steam valve.

- 2. In an apparatus of the class set forth, a pipe for supplying steam to the steam chests of a locomotive, automatic devices for permitting steam to pass through said pipe to the chests, these devices being operable by the movement of the locqmotive, means for holding said valve open irrespective of the automatic devices, and a manually operable valve in said pipe between said automatic valve and the steam supply, for the purpose set forth.

In testimony whereof I hereunto allix my signature.

CHARLES LESLIE ZERBE. 

